Plug lock



FIG. 1 is a front elevational view of the plug lock showing my newdesign;

FIG. 2 is a rear elevational view of the plug lock thereof;

FIG. 3 is a left-side elevational view of the plug lock thereof;

FIG. 4 is right side view elevational of the plug lock thereof;

FIG. 5 is a top plan view of the plug lock thereof; and,

FIG. 6 is a perspective view of the plug lock thereof.

I claim, the ornamental design for the plug lock, as shown anddescribed.